<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<style>
		* {
			margin: 0;
			padding: 0;
		}

		html,
		body {
			padding: 0;
			margin: 0;
			width: 100%;
			height: 100%;
			background-image: linear-gradient(135deg, rgb(255, 211, 165) 10%, rgb(253, 101, 133) 100%);
		}
	</style>
	<body>
		<canvas class="cavs"></canvas>
	</body>
	<script>
		var canvas = document.querySelector('canvas'),
			ctx = canvas.getContext('2d')
		canvas.width = window.innerWidth;
		canvas.height = window.innerHeight;
		ctx.lineWidth = .3;
		ctx.strokeStyle = (new Color(150)).style;

		var mousePosition = {
			x: 30 * canvas.width / 100,
			y: 30 * canvas.height / 100
		};

		var dots = {
			nb: 250,
			distance: 100,
			d_radius: 150,
			array: []
		};

		function colorValue(min) {
			return Math.floor(Math.random() * 255 + min);
		}

		function createColorStyle(r, g, b) {
			return 'rgba(' + r + ',' + g + ',' + b + ', 0.8)';
		}

		function mixComponents(comp1, weight1, comp2, weight2) {
			return (comp1 * weight1 + comp2 * weight2) / (weight1 + weight2);
		}

		function averageColorStyles(dot1, dot2) {
			var color1 = dot1.color,
				color2 = dot2.color;

			var r = mixComponents(color1.r, dot1.radius, color2.r, dot2.radius),
				g = mixComponents(color1.g, dot1.radius, color2.g, dot2.radius),
				b = mixComponents(color1.b, dot1.radius, color2.b, dot2.radius);
			return createColorStyle(Math.floor(r), Math.floor(g), Math.floor(b));
		}

		function Color(min) {
			min = min || 0;
			this.r = colorValue(min);
			this.g = colorValue(min);
			this.b = colorValue(min);
			this.style = createColorStyle(this.r, this.g, this.b);
		}

		function Dot() {
			this.x = Math.random() * canvas.width;
			this.y = Math.random() * canvas.height;

			this.vx = -.5 + Math.random();
			this.vy = -.5 + Math.random();

			this.radius = Math.random() * 2;

			this.color = new Color();
		}

		Dot.prototype = {
			draw: function() {
				ctx.beginPath();
				ctx.fillStyle = this.color.style;
				ctx.arc(this.x, this.y, this.radius, 0, Math.PI, false);
				ctx.fill();
			}
		};

		function createDots() {
			for (i = 0; i < dots.nb; i++) {
				dots.array.push(new Dot());
			}
		}

		function moveDots() {
			for (i = 0; i < dots.nb; i++) {

				var dot = dots.array[i];

				if (dot.y < 0 || dot.y > canvas.height) {
					dot.vx = dot.vx;
					dot.vy = -dot.vy;
				} else if (dot.x < 0 || dot.x > canvas.width) {
					dot.vx = -dot.vx;
					dot.vy = dot.vy;
				}
				dot.x += dot.vx;
				dot.y += dot.vy;
			}
		}

		function connectDots() {
			for (i = 0; i < dots.nb; i++) {
				for (j = 0; j < dots.nb; j++) {
					i_dot = dots.array[i];
					j_dot = dots.array[j];

					if ((i_dot.x - j_dot.x) < dots.distance && (i_dot.y - j_dot.y) < dots.distance && (
							i_dot.x - j_dot.x) > -dots.distance && (i_dot.y - j_dot.y) > -dots.distance) {
						if ((i_dot.x - mousePosition.x) < dots.d_radius && (i_dot.y - mousePosition.y) <
							dots.d_radius && (i_dot.x - mousePosition.x) > -dots.d_radius && (i_dot.y -
								mousePosition.y) > -dots.d_radius) {
							ctx.beginPath();
							ctx.strokeStyle = averageColorStyles(i_dot, j_dot);
							ctx.moveTo(i_dot.x, i_dot.y);
							ctx.lineTo(j_dot.x, j_dot.y);
							ctx.stroke();
							ctx.closePath();
						}
					}
				}
			}
		}

		function drawDots() {
			for (i = 0; i < dots.nb; i++) {
				var dot = dots.array[i];
				dot.draw();
			}
		}

		function animateDots() {
			ctx.clearRect(0, 0, canvas.width, canvas.height);
			moveDots();
			connectDots();
			drawDots();

			requestAnimationFrame(animateDots);
		}
		canvas.onmousemove=function(e){
			mousePosition.x = e.pageX;
			mousePosition.y = e.pageY;
		}
		canvas.onmouseleave=function(){
			mousePosition.x = canvas.width / 2;
			mousePosition.y = canvas.height / 2;
		}

		createDots();
		requestAnimationFrame(animateDots);

	</script>
</html>
